<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    
    <div id="app">
        {{msg}} {{1+1}} {{hello()}} <br/>
        <span v-html="msg"></span><br/>
        <span v-text="msg"></span>
    </div>

    <script src="../node_modules/vue/dist/vue.js"></script>
    <script>
        new Vue({
            el:'#app',
            data:{
                msg:"<h1>Hello</h1>"
            },
            methods: {
                hello(){
                    return "World";
                }
            },
        })
    </script>
</body>
</html>